Sudden! More than 2,800 flights in the United States have been cancelled!

Sudden! More than 2,800 flights in the United States have been cancelled!
According to a report by flight tracking data company FIightAware, severe weather has swept the northeastern United States since the 16th, and airlines have cancelled more than 2,800 domestic and foreign flights in the United States. The most flight cancellations are in New York, Charlotte and Boston and other cities airport.
The FAA said it was hiring more air traffic controllers as staff shortages had to reduce traffic in some of its busiest airspaces.